My rating: The 'Rackie' hammock has a metal frame which hooks onto the side of your cage (much like a radiator bed for cats).

The frame is quick and easy to place in the cage, and the cover can be easily removed to wash, and a replacement put on [there's a wide range of patterned/plain fleece and cotton on the site].This design offers something a little more sturdy than normal hammocks, and also makes great use of spaces around the cage.

Same problem... almost 4 months since original emails to agree which colours I wanted etc - money has been sent by me and received by seller, on agreement that rackies would be sent once payment received. I've not received my rackies and cannot get any response from seller.